The field content of the model is displayed in
Table REF , where the anomalon fields are highlighted in color and we also extended
the scalar sector of the SM in order to spontaneously break the \({\rm U}(1)_X\)  symmetry.
Similar setups for anomaly cancellation
were considered e.g. in Refs. [1]}, [2]}, [3]}, [4]}, [5]}, [6]}.For other anomalon configurations leading to anomaly cancellation
when baryon and/or lepton number generators are gauged
see e.g. [7]}, [8]}.
Here,
the more general SM charges of the electroweak anomalon fields \(({\cal L},{\cal N},{\cal E})\)  are needed
to evade LHC constraints on purely-chiral fermions
for \({\cal Y}\approx 2,-1\)  [9]}, [10]}, as it will be reviewed in Sect. .
In fact, as already anticipated in the Introduction,
we will be interested in exploring the limit in which the electroweak anomalon masses are dominantly
due to the Higgs, so that the strong bounds stemming from the
anomalous WZ
couplings of the light vector with SM gauge bosons are relaxed.
We have also included \(N\)  copies of chiral SM-singlet fermions \(\nu ^{\alpha }_{R}\) 
(\(\alpha = 1, \ldots , N\) )
which allow to have more freedom for the cancellation of
\({\rm U}(1)_X\)  and \({\rm U}(1)^3_X\)  anomalies (as well as provide a seesaw setup for neutrino masses),
but whose presence does not impact the calculation of the electroweak WZ terms.
<TABLE>